18809066 has 8 divisors (see below), whose sum is σ = 28285860. Its totient is φ = 9380448.

The previous prime is 18809057. The next prime is 18809083. The reversal of 18809066 is 66090881.

It can be written as a sum of positive squares in 2 ways, for example, as 17850625 + 958441 = 4225^2 + 979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11051 + ... + 12638.

Almost surely, 2^18809066 is an apocalyptic number.

18809066 is a deficient number, since it is larger than the sum of its proper divisors (9476794).

18809066 is a wasteful number, since it uses less digits than its factorization.

18809066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24088.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 18809066 is about 4336.9420102187. The cubic root of 18809066 is about 265.9433142819.

The spelling of 18809066 in words is "eighteen million, eight hundred nine thousand, sixty-six".